Understanding Smartwatch Sensors
Modern wearables claim to monitor everything from blood pressure to body fat percentages. However, only a few metrics are verified to have high clinical accuracy.
What Tracks Well
- Heart Rate (95%+ accuracy compared to chest straps)
- GPS Steps & Running distance
- Sleep Patterns (deep, REM, and light sleep logs)
Other readings like stress levels are based on heart rate variability algorithms and should be taken as estimates rather than medical diagnostics.